Analysis and measurements are used to demonstrate the advantages and disadvantages of a promising DC-DC power converter topology with lossless snubbers. With the snubbers the total transistor and diode losses are show...
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Analysis and measurements are used to demonstrate the advantages and disadvantages of a promising DC-DC power converter topology with lossless snubbers. With the snubbers the total transistor and diode losses are shown to be much less than in hard switching when the load current is large, and equal to or less than in hard switching when the load current is small. Measurements of the insulated-gate bipolar transistor (IGBT) switching performance in the DC-DC converter are presented. The design of a converter transformer with an integrated inductor is also presented. Also examined is the optimum gate resistance with respect to the performance when the snubber capacitors are not fully discharged at turn-on of the transistors.< >
Parameter identification of block oriented nonlinear systems containing continuous nonlinearities is presented. The procedure, based on the recursive least squares identification algorithm, is presented. The entire in...
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Parameter identification of block oriented nonlinear systems containing continuous nonlinearities is presented. The procedure, based on the recursive least squares identification algorithm, is presented. The entire input signal area is divided into the N sections. For each section, there exists one line in the matrix of parameters. The use of covariance matrix resetting and the combinations of forgetting factors yield good simulation results. The procedure is used for adaptive control of nonlinear processes. The results obtained are demonstrated for a model air flow control device. Advantages and disadvantages of the proposed solution are discussed.< >
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